Distributor advance springs

[88 Wagonman]

Does anyone know where to buy the springs for the centrifugal advance on a prestolite distributor? There is not a vacuum advance, just centrifugal. I am willing to try different curves, but here is what I am shooting for:

Engine RPM---- Timing degrees
1000-------------- 6* (starting point, no advance)
1150-------------- 8*
1300------------- 10*
1450------------- 12*
1600------------- 14*
2400------------- 16*
3200------------- 18*
4000------------- 20*
4600------------- 20*

They are easy to switch, so an assortment would work also. Thanks guys

 

[88 Wagonman]

These are for mallory distributors, but they look the same as the prestolite ones. I think I will give them a try.
http://www.jegs.com/i/Mallory/650/2...allory+29015&gclid=CKiOk4Pyy5wCFRYiagod0lEmKg

 

[5-90]

?!?

Is not ignition advance handled by the ECU in RENIX? I haven't actually torn a dizzy to bits (got one I need to do that with - just to check out parts,) but I don't recall seeing advance weights or springs in there...

Or is this for an earlier project? Prestolite parts can be difficult to find, you're probably going to have to settle for a "best fit" anyhow. The only Prestolite parts I've been able to find with any sort of regularity are voltage regulators.

 

[88 Wagonman]

?!?

Is not ignition advance handled by the ECU in RENIX? I haven't actually torn a dizzy to bits (got one I need to do that with - just to check out parts,) but I don't recall seeing advance weights or springs in there...

Or is this for an earlier project? Prestolite parts can be difficult to find, you're probably going to have to settle for a "best fit" anyhow. The only Prestolite parts I've been able to find with any sort of regularity are voltage regulators.

Sorry, I should have been more specific with my application info. I thought since I posted in the "Other Tech" forum that it would be assumed, but you know what they say about assumptions.

The distributor is actually out of a marine 4.3L GM engine. The only thing that you can get from OEM marine manufacturers is an entire retrofit kit for the whole ignition system (dizzy, coil, module, etc.) which is a lot more expensive than a couple of springs. The reason I need replacements is because they were both broken and laying in the bottom of the dizzy. Thanks for the reply though.